The city of Salem, Mass., has opened a memorial to commemorate the people who were convicted and killed during its notorious series of "witch trials" in 1692. The memorial stands at the site where 19 innocent women and men were hanged. The research of Ben Ray, Professor Emeritus of Religious Studies, was instrumental in determining the precise location of the hangings. Professor Ray can be seen in the front row of the memorial dedication ceremonies in the second picture included in this report from NPR. His recent book, Satan and Salem, is a product of his extensive research in the area.